“Platial provides a home for people who love quirky geographical information or just want to mark the locations that have meaning to them.

You might say Platial is a cross between MapQuest and LiveJournal. Built on the open interfaces for Google Maps, the 2-month-old site is one of a new breed of map mashups — web applications created by mixing an already-existing open mapping platform with original software.
Platial co-creator Di-Ann Eisnor says she built Platial for what she calls “neogeographers,” who use digital maps to tell stories and chart eccentric routes through familiar terrain.” (Wired)